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Code Issues Releases Activity

Add support for 8-bit grayscale to V4L grabber

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patch by Michael Benjamin % neuroptik AH gmail.com %
Original thread:
Date: Aug 24, 2006 5:40 PM
Subject: [Ffmpeg-devel] V4L grab.c patch for Grayscale

Originally committed as revision 6259 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Benjamin 2006-09-15 11:17:41 +00:00 committed by Guillaume Poirier
parent 3c0ba8703c
commit 1733fc4a6b
1 changed files with 9 additions and 1 deletions
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10
libavformat/grab.c
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@ -173,7 +173,11 @@ static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
pict.depth=24;
ret = ioctl(video_fd, VIDIOCSPICT, &pict);
if (ret < 0)
goto fail1;
pict.palette=VIDEO_PALETTE_GREY;
pict.depth=8;
ret = ioctl(video_fd, VIDIOCSPICT, &pict);
if (ret < 0)
goto fail1;
}
}
}
@ -256,6 +260,10 @@ static int grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
frame_size = width * height * 3;
st->codec->pix_fmt = PIX_FMT_BGR24; /* NOTE: v4l uses BGR24, not RGB24 ! */
break;
case VIDEO_PALETTE_GREY:
frame_size = width * height * 1;
st->codec->pix_fmt = PIX_FMT_GRAY8;
break;
default:
goto fail;
}